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1) 1/2x+4 = 3/5x- 2=> x=20

2) 10[1/2x + 4 = 3/5x - 2] => x= -6

3) 5x+40= 6x - 20 => X = 20

4) -1x + 40 = -20 => x= 60

5) -1x = - 60 => X= 60

6) x = 60

7) 1/2(60) + 4 = 3/5(60) - 2 => 34 = 34

8) 30 + 4 = 36 - 2 => 34 = 34

9) 34 = 34